Method for producing low-manganese molten steel by converter process
The invention discloses a method for producing low-manganese molten steel by a converter process. The method comprises the following steps: putting molten iron into an injection tank; blowing operation is carried out, the blowing medium is nitrogen, the flow is 60-80 Nm < 3 >/h, the gun is put...
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| creator | LIAO YANGBIAO FAN XIANWEI WANG SHUPENG PAN YANHUA LIU DONGQING WU YIQIANG WANG YANLIN JIA WANJUN |
| description | The invention discloses a method for producing low-manganese molten steel by a converter process. The method comprises the following steps: putting molten iron into an injection tank; blowing operation is carried out, the blowing medium is nitrogen, the flow is 60-80 Nm < 3 >/h, the gun is put into the molten iron for air stirring, and air blowing is carried out for 10-20 min; adding a desulfurizing agent to desulfurize the molten iron and slagging off; adding 400-800kg of oxidizing agent, stirring with nitrogen for 8-15 minutes, slagging off after the treatment is finished, and reducing the content of Mn in the molten steel to be less than or equal to 0.15%; comprising the following steps: carrying out primary deslagging when blowing is carried out to 25-35%; blowing until the oxygen supply intensity is greater than or equal to 80%, increasing the oxygen supply intensity to 3.3-3.7 Nm < 3 >/(t.min), and adding 2.0-4.0 kg of pellet ore per ton of steel; blowing is continued for 30-90 S after the lance appears |
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The method comprises the following steps: putting molten iron into an injection tank; blowing operation is carried out, the blowing medium is nitrogen, the flow is 60-80 Nm < 3 >/h, the gun is put into the molten iron for air stirring, and air blowing is carried out for 10-20 min; adding a desulfurizing agent to desulfurize the molten iron and slagging off; adding 400-800kg of oxidizing agent, stirring with nitrogen for 8-15 minutes, slagging off after the treatment is finished, and reducing the content of Mn in the molten steel to be less than or equal to 0.15%; comprising the following steps: carrying out primary deslagging when blowing is carried out to 25-35%; blowing until the oxygen supply intensity is greater than or equal to 80%, increasing the oxygen supply intensity to 3.3-3.7 Nm < 3 >/(t.min), and adding 2.0-4.0 kg of pellet ore per ton of steel; blowing is continued for 30-90 S after the lance appears</description><language>chi ; eng</language><subject>CHEMISTRY ; METALLURGY ; METALLURGY OF IRON ; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL ; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS</subject><creationdate>2023</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230905&DB=EPODOC&CC=CN&NR=116694847A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230905&DB=EPODOC&CC=CN&NR=116694847A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>LIAO YANGBIAO</creatorcontrib><creatorcontrib>FAN XIANWEI</creatorcontrib><creatorcontrib>WANG SHUPENG</creatorcontrib><creatorcontrib>PAN YANHUA</creatorcontrib><creatorcontrib>LIU DONGQING</creatorcontrib><creatorcontrib>WU YIQIANG</creatorcontrib><creatorcontrib>WANG YANLIN</creatorcontrib><creatorcontrib>JIA WANJUN</creatorcontrib><title>Method for producing low-manganese molten steel by converter process</title><description>The invention discloses a method for producing low-manganese molten steel by a converter process. 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| language | chi ; eng |
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| subjects | CHEMISTRY METALLURGY METALLURGY OF IRON PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS |
| title | Method for producing low-manganese molten steel by converter process |
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